Screen



FIG. 1 is a front perspective view of a screen, showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is its usage status diagram;

FIG. 9 is its folded state diagram;

FIG. 10 is its folded state diagram;

FIG. 11 is its folding state diagram; and,

FIG. 12 is its folding state diagram. 

CLAIM The ornamental design for a screen, as shown and described. 